rndrSBC

Ultra-lightweight, high-performance native E-Paper operating platform designed for Single-Board Computers.

Why rndrSBC?

  • Chromium-Free: 0MB browser bloat. No headless Chrome, no WebKit, no X11.
  • Insanely Fast: Renders vector dashboards in 35ms–60ms (vs. 10–15 seconds on Chrome).
  • Zero Swap & Memory Thrashing: Runs in < 15MB RAM (ideal for Pi Zero W / Pi Zero 2W / Pi 3).
  • Responsive Canvas Engine: Resolution-independent vector layout with fractional split boxes and auto-scaling typography.
  • 100% Clean-Room Architecture: Fully standalone with modular display drivers and widget system.

Quick Start (Development / PC / Mac)

# 1. (Optional) Vendor the runtime deps for a fully-offline copy
python3 build_vendor_deps.py

# 2. Run single-pass render test
python3 main.py --once

Output is rendered directly to live_screen.png.

Run the web dashboard (any platform)

python3 main.py 8080          # foreground
python3 main.py --daemon 8080 # background, self-detaches (no sudo)

Raspberry Pi — no install.sh required

rndrSBC is relocatable: it anchors every path (config, previews, photo library) to its own folder, and it can load its Python deps straight from a vendored wheel bundle. So deployment is simply:

# Copy the project folder onto the Pi, then:
python3 main.py 8080

Optional, per-target dependency bundle (needs internet once, on the Pi):

python3 build_vendor_deps.py            # detects this machine's arch
# or for a Raspberry Pi explicitly:
python3 build_vendor_deps.py --platform aarch64   # 64-bit OS / Pi 4+ / Pi 5
python3 build_vendor_deps.py --platform armv7l    # 32-bit OS

The resulting vendor/deps/*.whl files let the platform run fully offline with zero pip installs. Skip this and rndrSBC will fall back to your system's packages (or create a private .venv on first run).

If you want rndrSBC to start at boot (optional), use the relocatable unit:

# edit the two placeholders in rndrSBC.service, then:
sudo cp rndrSBC.service /etc/systemd/system/
sudo systemctl daemon-reload
sudo systemctl enable --now rndrSBC

A legacy install.sh is still included for compatibility, but it is no longer required.

Recent Additions (this build)

Physical Buttons (GPIO) — core/buttons.py

  • Wire three buttons to GPIO 17 / 27 / 22 (to GND), enabled in the dashboard.
  • NEXT cycles widgets, PREV goes back, TOGGLE-QUIET pauses/restarts refreshes.
  • Falls back gracefully when RPi.GPIO is absent (simulator / laptop / CI) — buttons are auto-disabled.

CalDAV + iCal Calendar — widgets/calendar/widget.py

  • Calendar widget now accepts a caldav config (URL + basic-auth user/password) in addition to public iCal feed URLs.
  • Fetches via HTTPS REPORT query, parses with the native ICS parser (no extra deps); per-date event-dot markers on the month grid.

Localization (i18n) — core/i18n.py

  • New language global setting (English, Español, Français, Deutsch, Italiano, Português, Nederlands, Türkçe).
  • Localizes the calendar weekday headers + agenda labels and the weather "Updated / Feels Like / Wind / Humidity" labels.
  • Add languages in core/i18n.py with three dicts (MONTHS, WEEKDAYS, LABELS).

Reflect-mode refresh — core/transitions.py + scheduler

  • refresh_mode: "auto" (default) uses dirty-rect partial refresh when the panel supports it, with a full-refresh recharge every 20 partials.
  • refresh_mode: "full" opt-out forces full-frame always (dashboard Display Transitions card).

Project links

Data verified by PyPI on Aug 29, 2026
Data provided by the project maintainers, verified at the time the release was uploaded to PyPI.

Key dates

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  • Released:
Newer release available (0.12.0)

1 maintainer

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Avatar for thetaylormcrae from gravatar.com thetaylormcrae

Credits

Author: rndrSBC

GitHub Statistics

Data verified by PyPI on Aug 29, 2026
The GitHub source repository was provided by the project maintainers and verified by PyPI at the time of upload. Stars, forks, and open issues/PRs are derived from that repository and have not been independently verified.

License

MIT

Requires

Python >=3.9

Provides Extra

dev pi

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0.12.0

2 files

0.11.2

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0.11.1

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0.11.0

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0.10.4

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0.10.3

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0.9.0

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0.8.3

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0.8.2

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0.8.1

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0.7.7

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0.6.7

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0.6.6

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0.6.2

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0.5.0

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0.4.2

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0.4.1

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0.4.0

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0.3.1

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0.3.0

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This release

0.2.0 This release

2 files

0.1.0

2 files

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